| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Sweden | 6 | |
| #2 | Australia | 1 | |
| #3 | Canada | 1 | |
| #4 | France | 1 | |
| #5 | United States | 1 | |
| #6 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Thermal processes | |
| #3 | Chemical engineering | |
| #4 | Basic materials chemistry | |
| #5 | Machines | |
| #6 | Furniture and games |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sundberg Hardy | 9 |
| #2 | Sundberg H | 1 |
| Publication | Filing date | Title |
|---|---|---|
| AU3772893A | Process and arrangement for vapour enrichment of air | |
| SE9100091D0 | Device for evaporating combustion air by increasing dew-point - uses heat in flue gas, converting it to bound heat in water vapour in incoming combustion air | |
| SE8900519D0 | Heating system - functions with cold medium and adsorbent, absorber, desorption unit, evaporator, condenser and heat exchanger | |
| US4492560A | Gas combustion control apparatus |